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951.
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953.
Haesung Yoon Yong Seung Lee Beom Jin Lim Kyunghwa Han Hyun Joo Shin Myung-Joon Kim Mi-Jung Lee 《European radiology》2020,30(4):1986-1996
To evaluate elasticity and perfusion change associated with fibrosis in a rabbit model of unilateral ureter obstruction using shear wave elastography (SWE) and contrast-enhanced ultrasonography (CEUS). Complete unilateral ureter obstruction by ligation was performed in the left kidney of 15 rabbits. Renal elasticity on SWE and perfusion change on CEUS at the renal cortex were measured before and after the operation. Histopathological renal fibrosis was quantified by the stained area ratio with Masson trichrome and Picrosirius red using ImageJ analysis. Renal elasticity and perfusion values were compared by the Mann-Whitney U test and Proc Mixed as a function of time. Spearman’s correlation was used to analyze differences between imaging values and fibrosis. The duration of imaging follow-up was up to 49 days, with interval imaging performed 1–3 times. Renal elasticity values were higher in obstructed kidneys compared to contralateral kidneys (31.0 kPa vs 16.4 kPa, p < 0.001) and increased according to postoperative time (0.46 kPa/day). With respect to renal fibrosis, SWE values were positively correlated with Masson trichrome (ρ = 0.651, p < 0.001) and Picrosirius red (ρ = 0.514, p = 0.007). Among CEUS parameters, mean transit time was negatively correlated with renal fibrosis by Masson trichrome (ρ = − 0.639, p = 0.001) and Picrosirius red (ρ = − 0.625, p = 0.001). Rise time and time to peak were positively correlated with renal fibrosis. Obstructive uropathy resulted in changes to both renal elasticity and perfusion. Renal fibrosis was moderately associated with increased renal cortical stiffness and both delayed and decreased cortical perfusion. • Obstructive uropathy causes changes in elasticity and perfusion in a rabbit model. • Renal fibrosis from obstructive uropathy increases renal cortical stiffness, and both delay and decrease cortical perfusion. 相似文献
954.
Park Chae Jung Han Kyunghwa Shin Haesol Ahn Sung Soo Choi Yoon Seong Park Yae Won Chang Jong Hee Kim Se Hoon Jain Rajan Lee Seung-Koo 《European radiology》2020,30(6):3035-3045
European Radiology - To identify significant prognostic magnetic resonance imaging (MRI) features and their prognostic value when added to clinical features in patients with isocitrate... 相似文献
955.
Ho-Sung Yoon Ki-Jo Kim In-Woon Baek Yune-Jung Park Wan-Uk Kim Chong-Hyeon Yoon Chul-Soo Cho 《Clinical rheumatology》2014,33(3):341-348
The purpose of this study is to investigate the frequency of the subclinical synovitis in hand or wrist joints of the SLE patients using ultrasonography (US) and to correlate them with clinical parameters. Forty-eight systemic lupus erythematosus (SLE) patients without musculoskeletal (MS) involvement were enrolled and underwent clinical and laboratory examinations. Gray-scale and power Doppler (PD) US was performed for imaging the wrist, second and third metacarpophalangeal (MCP) joints, and flexor tendons on non-dominant sides of the individuals. US synovitis index (USSI) and PD index were calculated as sum of the synovitis and PD semiquantitative scores, respectively, obtained from each joint. Subclinical synovitis was found by US in 28 (58.3 %) out of 48 patients. US revealed synovitis of the wrist in 16 (33.3 %) patients, of the second MCP joint in 14 (29.2 %) and of the third MCP joint in 15 (31.3 %). PD signals in three (6.3 %) patients and tenosynovitis in two (4.2 %) were also detected. USSI scores showed significant positive correlation with erythrocyte sedimentation rate (ESR) levels (r = 0.30, p < 0.05) or anti-dsDNA Ab titers (r = 0.34, p < 0.05). Within 6 months after US examination, new MS symptoms were developed in 11 (22.9 %) patients. Older age at diagnosis (OR 1.283, 95 % CI 1.029–1.601, p = 0.027) or higher USSI scores (OR 12.93, 95 % CI 1.023–163.503, p = 0.048) were independently associated with development of new MS symptoms. Subclinical synovitis is common in SLE patients who do not suffer from MS symptoms. US is useful to detect joint abnormalities before symptoms appear in SLE patients. 相似文献
956.
Jongha Park Soe Hee Ann Hyun Chul Chung Jong Soo Lee Shin-Jae Kim Scot Garg Eun-Seok Shin 《Heart and vessels》2014,29(1):58-64
Hemodialysis (HD)-induced myocardial ischemia is associated with an elevated cardiac troponin T, and is common in asymptomatic patients undergoing conventional HD. Remote ischemic preconditioning (RIPC) has a protective effect against myocardial ischemia–reperfusion injury. We hypothesized that RIPC also has a protective effect on HD-induced myocardial injury. Chronic HD patients were randomized to the control group or the RIPC group. RIPC was induced by transient occlusion of blood flow to the arm with a blood-pressure cuff for 5 min, followed by 5 min of deflation. Three cycles of inflation and deflation were undertaken before every HD session for 1 month (total 12 times). The primary outcome was the change in cardiac troponin T (cTnT) level at day 28 from baseline. Demographic and baseline laboratory values were not different between the control (n = 17) and the RIPC groups (n = 17). cTnT levels tended to decrease from day 2 in the RIPC group through to 28 days, in contrast to no change in the control group. There were significant differences in the change of cTnT level at day 28 from baseline [Control, median; ?0.002 ng/ml (interquartile range ?0.008 to 0.018) versus RIPC, median; ?0.015 ng/ml (interquartile range ?0.055 to 0.004), P = 0.012]. RIPC reduced cTnT release in chronic conventional HD patients, suggesting that this simple, cheap, safe, and well-tolerated procedure has a protective effect against HD-induced ischemia. 相似文献
957.
Soo Lim Jae Hyun Bae Eun Ju Chun Haeryoung Kim So Yeon Kim Kyoung Min Kim Sung Hee Choi Kyong Soo Park Jose C. Florez Hak Chul Jang 《Acta diabetologica》2014,51(5):739-748
Pancreatic volume and fat content might be associated with β-cell function or insulin resistance (IR). We investigated the difference in pancreatic volume and fat content between age- and body mass index (BMI)-matched normal subjects and patients with having different durations of type 2 diabetes (T2D). We compared pancreatic volume and fat parameters between 50 age- and BMI-matched normal subjects, 51 subjects with newly diagnosed type 2 diabetes (T2D-new), 53 subjects with T2D <5 years (T2D<5Y), and 52 subjects with T2D ≥5 years (T2D≥5Y). Age and BMI were matched to range of ±2 years and ±0.5 kg/m2, respectively. Pancreatic volume and fat were measured by multidetector-row computed tomography with 64 detector-row scanner. The difference in Hounsfield units between pancreas and spleen (HUp–s) was investigated for fat density. Anthropometric and biochemical parameters including the homeostasis model assessment of IR (HOMA-IR) and the insulinogenic index (IGI) were measured. Compared with normal subjects, patients with T2D had significantly smaller pancreatic volume, greater pancreatic fat, and lower HUp–s. Among the groups with T2D, pancreatic volume decreased and pancreatic fat percentage and HUp–s increased from the T2D-new to the T2D<5Y and T2D>5Y groups. Pancreatic volume and fat and HUp–s values were associated with HbA1c and triglyceride levels. Pancreatic volume was correlated with IGI while pancreatic fat and HUp–s values were correlated with HOMA-IR. The current study suggests that pancreatic volume and fat deposition might be associated with the development and progression of T2D in Korean subjects. 相似文献
958.
959.
Young Ae Kim Hee Young Ju Hyeon Jin Park Na Young Lee Hyun Jeong Lee Hyewon Lee Haryeom Ghang 《British journal of haematology》2020,188(5):740-744
This study used Korean national data to investigate the relationship between treatment patterns and outcomes in Korean adolescent and young-adult (AYA) acute lymphoblastic leukaemia (ALL) patients. Chemotherapy incorporating L-asparaginase was considered paediatric-inspired (PI), as opposed to adult protocols. In total, 65·3% of patients received PI therapy. Five-year overall survival (OS) of PI-treated patients outperformed adult protocols (63·1% vs. 40·4%; P < 0·0001); this trend was maintained within various age subgroups. Younger age, L-asparaginase therapy, and radiotherapy corresponded with superior OS by multivariable analysis. OS tends to improve with PI protocols that include L-asparaginase in AYA ALL, suggesting that therapy protocol is critical in the treatment performance of this group. 相似文献
960.
Min-Ho Shin Jin-Su Choi Jung-Ae Rhee Young-Hoon Lee Hae-Sung Nam Seul-Ki Jeong Kyeong-Soo Park Hye-Yeon Kim So-Yeon Ryu Seong-Woo Choi Hee Nam Kim Hye-Rim Song Jane A. Cauley Sun-Seog Kweon 《Atherosclerosis》2014